Malicious PDF — malware analysis report

Static analysis result for SHA-256 da79d98f32845f6c…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 03:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d933d9ae5ba53d39befc42eb6b3f0d7f SHA-1: 925be703c6f7794945b14a490108546a7cad6898 SHA-256: da79d98f32845f6c0e706f621b5eef519c1bc57397cc0f4247069f31a8258ad8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/123?utm_term=pirates+bay+movies PDF link annotation
    • https://xalorato.weebly.com/uploads/1/3/4/3/134317389/xotedob_kabelaxenasumun_pafolabozi_najitevovumidi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366057/normal_5ffd5bd3243d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_602a345336056.pdfIn PDF document text
    • https://gejosubirimo.weebly.com/uploads/1/3/0/7/130776575/pitajusonupipe.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/nora_roberts_the_awakening_trilogy_book_2.pdfIn PDF document text
    • https://wozexofinudere.weebly.com/uploads/1/3/5/9/135984457/3150678.pdfIn PDF document text
    • http://namelesssouth.xyz/easy_writer_6th_edition_20194j3tp.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/59264431784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_5fe88b54cdda5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_600b1e9789aa7.pdfIn PDF document text
    • http://wersita.space/where_to_donate_used_toys_for_christmas_near_mexnnnj.pdfIn PDF document text
    • https://powelogub.weebly.com/uploads/1/3/1/8/131871449/nemonu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428069/normal_600491c68428f.pdfIn PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/9197975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407299/normal_60307044934b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485166/normal_60494866867f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446924/normal_5ffa913bee754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477638/normal_60035f5c5e9ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wodowepakimeko.onlinewebshop.net/bruchrechnung_addition_aufgaben.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/tonipanavoturonenerunido.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/muparoxe.pdfIn PDF document text
    • http://vekamodadon.onlinewebshop.net/sheridan_college_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/what_are_the_approaches_of_literary_criticism.pdfIn PDF document text
    • http://gipetiwivi.atwebpages.com/fundamentals_of_differential_calculus.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FC 5100 bytes
SHA-256: 92b7740558d64d433604e827a7b47659fc19cc78c89937031e3294490372605e
font_01_sfnt_off00010446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10446 11048 bytes
SHA-256: a427051c1be470cd702c9f94ca1fa87966114a26949e1a5befbd9fdae5d2350a

Open this report in the interactive analyzer, or submit your own file for analysis.